It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Prayer is the best deed that has been prescribed (by Allah), so whoever is able to do much of it, let him do much of it."
These hadiths are narrated from Muhammad bin Ka'b al-Qurazi (may Allah have mercy on him), from Sayyiduna Abu Hurayrah (may Allah be pleased with him), only with this chain, and Abu Mawdud (may Allah have mercy on him) is alone in narrating them.
Hadith Referenceالمعجم الأوسط / باب الألف / 243
Hadith Gradingمحدثین:إسناده ضعيف لضعف عبد المنعم بن بشير
Hadith Takhrij«قال الهيثمي: فيه عبد المنعم بن بشير وهو ضعيف «مجمع الزوائد ومنبع الفوائد، ج 2، ص 249»»