Musannaf Ibn Abi Shayba 38:83

Ghundar narrated to us, from Shu'bah, from Abu Maslamah, who said: I heard 'Ammar ibn Yasir saying: "Whoever is pleased that the wide-eyed houris should surround him, let him step forward between the two ranks, seeking reward (from Allah). For I truly see a rank that will strike you with a strike that the followers of falsehood will doubt because of it. By the One in Whose hand is my soul, if they were to strike us until they reached the palm branches of Hajar, I would know that we are upon the truth and that they are upon misguidance."