It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that he said: "Your Prophet (peace and blessings be upon him) was commanded fifty prayers, so he (peace and blessings be upon him) asked his Lord to make them five prayers."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Abdullah bin Usm except Sharik."
Hadith Referenceالمعجم الأوسط / باب الميم / 6109
Hadith Takhrij«أخرجه الضياء المقدسي فى «الأحاديث المختارة» برقم: 115، 116، 117، 118، وابن ماجه فى «سننه» برقم: 1400، وأحمد فى «مسنده» برقم: 2937، 2938، 2936»