It is narrated from Sayyiduna Anas (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Make it binding upon yourselves to keep to the two rak'ahs (sunnah) of Fajr, for in these two rak'ahs are such great blessings, precious rewards, and everything that a believer sincerely longs and wishes for."
Imam al-Harith bin Abi Usamah recorded this narration in his Musnad; however, due to the narrator Abd al-Hakam in its chain being majhul (unknown), this narration is da'if (weak) in its chain.
Hadith Referenceالمطالب العالية بزوائد المسانيد الثمانية / كتاب النوافل / 611
Hadith Gradingمحدثین:إسناده حسن
Hadith Takhrij«حکم الحدیث المطالب العالیہ محققاً تنسیق د. سعد بن ناصر بن عبد العزيز الشَّثري- مکتبہ شاملہ :إسناده حسن لغيره. » «انفرد به المصنف من هذا الطريق»