Imam Al - Ghazali ( ra) states:
"The share of the servant in the name Al - Rahmaan lies in showing mercy to the negligent servants of Allah , by way of dissuading them from the path of disobedience towards Allah , through advice and counseling , by way of gentleness and not harshness , treating the sinners with the eye of mercy, and not with the eye of contempt ; letting every sin perpetrated in the world be as if his own sin , so sparing no effort to remove it to the best of his ability : all out of mercy to the that sinner , lest he be exposed to the wrath of Allah , and so deserve to be removed from closeness to Him."
"The servant's share in the name of Al- Rahim lies in ( not ) turning away any needy person , except by fulfilling his needs , to the extent of his ability, nor abandoning any poor in his neighborhood or city , except by undertaking to relieve their poverty - either from his own wealth or reputation or otherwise by interceding on his behalf with another . If he is unable to do all that , he should assist the poor person by prayer, and by showing grief on account of his need, in sympathy and compassion towards him, as though he was sharing in his misfortune and need. "
( translated from the Arabic text: المقصد الأسنى شرح اسماء الله الحسنى ، للأمام الغزالى )