It is narrated from Sayyidah Umm Anas bin Malik (may Allah be pleased with her) that she said: "O Messenger of Allah (peace and blessings be upon him), advise me." He (peace and blessings be upon him) said: "Abandon sins, for that is the best emigration (hijrah); guard the obligatory duties, for that is the best jihad; and remember Allah much, for you will not bring to Allah anything more beloved to Him than abundant remembrance of Him."
"This hadith is narrated from Sayyidah Umm Anas al-Ansariyyah (may Allah be pleased with her), and she is not Sayyidah Umm Sulaym (may Allah be pleased with her), the mother of Sayyiduna Anas bin Malik (may Allah be pleased with him); rather, she is another woman of the Ansar."
"This hadith has been narrated only with this chain, and Hisham bin Ammar (may Allah have mercy on him) is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الميم / 6822
Hadith Takhrij«أخرجه ابن حجر فى «المطالب العالية» برقم: 223، والطبراني فى «الكبير» برقم: 313، 359، والطبراني فى «الأوسط» برقم: 6735»