Abu Tufayl reported,

There was some disagreement, of the sort that occurs between people, between Hudhayfa and a man from the people of Uqba. The man said, "I adjure you by Allah, how many were the people of Uqba?"The people said to Hudhayfa, "Tell him, since he has asked you."Hudhayfa said, "We were told that they were fourteen. If you were among them, then they were fifteen. I bear witness by Allah that twelve of them are at war with Allah and His Messenger in this worldly life and on the Day when the witnesses arise. Three were excused, for they said, 'We did not hear the caller of the Messenger of Allah ﷺ, nor did we know what the people intended.'"He had been on a stretch of rocky ground and walked ahead, saying, "The water is scarce, so let no one reach it before me." But he found that some people had gone ahead of him to it, and he cursed them on that day.

عن أبي الطفيل قال

كان بين رجل من أهل العقبة وبين حذيفة بعض ما يكون بين الناس، فقال: أنشدك بالله! كم كان أصحاب العقبة؟ قال: فقال له القوم: أخبره إذ سألك، قال: كنا نخبر أنهم أربعة عشر، فإن كنت فقد كان القوم خمسة عشر، وأشهد بالله أن اثني عشر منهم حرب لله ولرسوله في الحياة الدنيا ويوم يقوم الأشهاد، وعذر ثلاثة، قالوا: ما سمعنا منادي رسول الله ﷺ ولا علمنا بما أراد القوم، وقد كان في حرة فمشى فقال: إن الماء قليل، فلا يسبقني إليه أحد فوجد قوما قد سبقوه، فلعنهم يومئذ.