It is narrated from Sayyiduna Abu Ubaydah al-Du'ali (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Were it not for Allah's servants who bow, nursing infants and grazing animals, punishment would have been poured upon you, and then you would have been crushed."
Hadith Referenceالمعجم الكبير للطبراني / مسند من يعرف بالكنى / 18989