Ma'dan Ya'mari (may Allah have mercy on him) says that once I met Hazrat Thawban (may Allah be pleased with him), so I requested, "Please tell me of a deed that is most beloved to Allah, by virtue of which Allah will admit me into Paradise." At this, he remained silent. After I asked three times and he remained silent, he said, "I also asked the Messenger of Allah (peace and blessings be upon him) this same question, and the Messenger of Allah (peace and blessings be upon him) said: 'Make abundant prostration (sujood) obligatory upon yourself, for whenever you perform a prostration for the sake of Allah's pleasure, Allah will raise you one degree and erase one sin because of it.'" Ma'dan says, "Then I met Hazrat Abu Darda (may Allah be pleased with him) and asked him the same question, and he gave me the same answer that Hazrat Thawban (may Allah be pleased with him) had given."