The impact of Tawheed Ar-Robobeyya (the Oneness of Lordship) on the monotheistic slave Atheism is a sickness in the mind, a defect in the thinking, resulting in misguidance of the heart and making one feel lost in one’s life.
1-It protects them from confusion and doubt: how could a person be confused or in doubt when he knows that he has a Lord Who is the Lord of all things; Who created him and fashioned him, Who was generous and bountiful towards him, and made him His viceroy on earth? Allah made everything in the heavens and on earth subservient to man and bestowed upon him blessings, both those that are visible and those that are not visible. Man feels safe with his Lord and finds refuge in His company. He knows that life is short and mixed with good and bad, justice and injustice, and pleasure and pain. Iman is the vessel to safety.
Those who renounce that Allah is the Lord and are skeptical about their meeting with Him, their lives have neither taste nor meaning. Their lives are filled with a series of worries, confusion and questions which have no answers. They have no refuge and thus their minds live wandering – however intelligent they may be - in bewilderment, doubt, disorder and anxiety. This is the torment they live in, in this world, and its negative effects hit their hearts in the morning and the evening. He who finds wealth in being with Allah, others will feel a need for him.
2-Spiritual tranquility: this has only one source, which is to have Iman in Allah and the Last Day, a deep, sincere Iman that is not mixed with doubt or corrupted with hypocrisy. This is what facts prove and history supports, and this is what can be seen by every insightful person who is fair to himself and those around him. It is evident that those who are the most worried, distressed, annoyed and have the greatest sense of futility and loss are those who are deprived of the bliss of Iman and the coolness of certainty. Their lives have no taste nor is there any meaning to their lives, even though they might be filled with pleasures and comforts. This is because they are not aware of the purpose of their lives, nor do they understand their objective, and they do not have any goals. How could they possibly achieve tranquility in their souls when they are in such a state or when they even feel contented? This tranquility is the fruit of Iman and monotheism is a solid tree that constantly bears fruits, with the permission of its Lord. Tranquility is an aroma from heaven that descends upon the hearts of the Mu"meneen to make them steadfast when others are troubled, contented when others are discontented, certain when others are doubtful, patient when others are alarmed, and forbearing when others are reckless. This tranquility is that which filled the heart of the Messenger of Allah (peace be upon him) on the day of his Hijra (immigration). No distress or sorrow occupied his heart, nor did he feel dread or fear, and neither did doubt or worry enter his heart. Allah (mighty and majestic is He) says: "If you do not aid the Prophet - Allah has already aided him when those who disbelieved had driven him out (of Mecca) as one of two, when they were in the cave and he said to his companion: "Do not grieve; indeed Allah is with us"" (At-Taubah: 40).
The Prophet"s friend, Abu Bakr (may Allah be pleased with him), was overcome with the feelings of sadness and compassion, not for himself or his life, but for the Messenger (peace be upon him) and the call for monotheism. He said to the Prophet while their enemies were surrounding the very cave in which they were hiding: “O Allah"s Messenger, if one amongst them were to look down at his feet he would have surely seen us.” Thereupon the Prophet replied: “Abu Bakr, what can befall two who have Allah as the third with them?" (Narrated by Muslim)
This tranquility is a kind of spirit from Allah, and a serenity that pacifies the frightened. It reassures them when they are anxious, relieves them when they are sad, comforts them when they are tired, strengthens them when they are weak, and guides them when they are confused. This tranquility is a window to Paradise which Allah opens for the Mu"meneen, and from that window blows the gentle breeze of Jannah, its light shining through, and its fragrance and perfume lingering on. Through this tranquility Allah lets them taste some of the good they have done, and He gives them a small sample of what bliss awaits them. Thus they are blessed with these breezes with contentment, sweet smells, peace and security. The weaker your connection with Allah, the more confused and conflicted you feel.
3-Trust in Allah: everything is in Almighty Allah"s Grip. He is the One who has power to benefit and to harm. He (mighty and majestic is He) is Al-Khaleq (the Creator), Al- Razzaq (the Sustainer), Al-Malek (the Owner), Al-Modabbir (the Manager of everything), and He holds the reins of the heavens and the earth. If a Mu"men has the knowledge that nothing will befall him except that which Allah has decreed for him of good or bad, or benefit or harm, and that even if all the creation were to gather together to cause something to happen to him, nothing would occur except that which Allah has decreed, he will then realize that Allah alone is the one Who possesses the power to benefit or to harm, and Who grants or withholds. This requires that he increases his trust in Allah Almighty and adheres to monotheism. It is for this reason that Allah condemns those who worship gods which do not benefit or harm them, nor are they of use to their worshippers in any way. Allah says: "To Him belong the keys of the heavens and the earth; and they who disbelieve in the verses of Allah - it is those who are the losers" (Az-Zumar: 63). The heart is filled with disorder that can only be dispersed by being devoted to Allah. It contains a desolation that can only be eliminated with Allah"s company when he is in solitude. It contains sadness that will not be dispelled except with the pleasure of knowing Him and being sincere to Him.
4-Glorification of Allah: the effect of this is apparent in the life of a Mu"men who singles out Allah for worship, directs his intentions and supplications to Him, and submits to His will. When a Mu"men contemplates over what Allah controls in the kingdom of the heavens and earth, he cannot help but say: "My Lord encompasses all things in knowledge…" (Al-An"âm: 80).
He says: "Our Lord, You did not create this aimlessly" (Âl-"Imrân: 191).
All of this indicates the attachment of the heart to its Lord, the Creator (mighty and majestic is He), that it strives hard to attain His pleasure, seeks to honour His ordainments and commands and does not worship any other god who does not even have a whit of control over himself or others in the heavens or earth beside Allah. All of this honours Allah (mighty and majestic is He), and is the effect of Tawheed of Ar-Robobeyya on the Mu"men.