Sayyiduna al-Abbas bin Abd al-Muttalib (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "That I sit from after the morning prayer until the sun rises (that is, keep remembering Allah) would be more beloved to me than freeing four slaves from the descendants of Sayyiduna Isma'il (peace be upon him)."
Al-Bazzar recorded it, and al-Tabarani also recorded it, except that he recorded these words: "That I keep remembering Allah after performing the morning prayer until the sun rises is more beloved to me than preparing horses to give in the way of Allah until the sun rises." Both chains contain Muhammad bin Abi Humayd, and he is da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الأذكار / 16947