It is narrated from Sayyiduna Zayd bin Arqam (may Allah be pleased with him) that he said: "The Night of Decree is the seventeenth night (of Ramadan); it is (the night of) that day spoken of as 'the day of decision between truth and falsehood, the day the two hosts (of believers and disbelievers) met' [Surah al-Anfal: 41]. I have no doubt about it, nor do I make any exception in it (that is, leave any room for doubt)."
This report makes clear that Sayyiduna Zayd bin Arqam (may Allah be pleased with him), in view of the occurrence of the Battle of Badr, held the night of the 17th of Ramadan to be the Night of Decree and firmly believed it.
Hadith Referenceالمطالب العالية بزوائد المسانيد الثمانية / كتاب الصيام / 1120
Hadith Gradingمحدثین:إسناده ضعيف
Hadith Takhrij«حکم الحدیث المطالب العالیہ محققاً تنسیق د. سعد بن ناصر بن عبد العزيز الشَّثري- مکتبہ شاملہ :إسناده ضعيف. » «أخرجه مصنف ابن أبي شيبة برقم: 9624، وأخرجه المعجم الكبير للطبراني برقم: 5079»