Sayyida Aisha Siddiqa (may Allah be pleased with her) narrates this statement of the Noble Prophet (peace and blessings of Allah be upon him): “Indeed, Allah Almighty and His angels send mercy upon those who join the rows.” (Imam Ibn Hibban, may Allah have mercy on him, says:) The narrator named Usama bin Zaid is Laithi; he is their freed slave. He is associated with the people of Madinah and is upright in his affairs. His narrations are authentic. Whereas Usama bin Zaid bin Aslam is a resident of Madinah Munawwarah, but he is weak. Both belong to the same era, but the narrator named Laithi is older in age.
Hadith Referenceصحیح ابن حبان / كتاب الصلاة / 2163
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيحسن - انظر (2157). تنبيه!! رقم (2157) = (2160) من «طبعة المؤسسة». الرقم المشار إليه ليس بلفظ: « .. يَصِلُونَ الصُّفُوفَ»، وإنما بلفظ: « .. مَيَامِنِ الصُّفُوفِ». - مدخل بيانات الشاملة -.فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده حسن