Sayyiduna Sa’d (may Allah be pleased with him) narrates: By Allah! I am the first person among the Arabs who shot an arrow in the path of Allah (during battle). We used to participate in expeditions with the Prophet (peace and blessings of Allah be upon him), and we had nothing to eat except the leaves of a certain type of tree, until one of us would defecate like the droppings of a goat, with nothing mixed in it. Now, if the Banu Asad try to reproach me regarding religion, then I have been disgraced and my deeds have been wasted.
Hadith Referenceصحیح ابن حبان / كتاب إخباره ﷺ عن مناقب الصحابة رجالهم ونسائهم بذكر أسمائهم رضوان الله عليهم أجمعين / 6989
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - «مختصر الشمائل» (114): ق.فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرط مسلم