‏الجهاد والسير‏ : Hadeeth No:4325 It is narrated on the authority of Ibn Umar that the Messenger of Allaah (sallAllaahu alayhi wa sallam) caused the date-palms of Banu Nadir to be cut down and burnt. It is in this connection that Hassan (the poet) said: It was easy for the nobles of Quraish to barn Buwaira whose sparks were flying ...

‏الأضاحي : Hadeeth No:4871 Umm Salama reported (these words) directly from Allaah's Messenger (sallAllaahu alayhi wa sallam): If anyone has in his possession a sacrificial animal to offer as a sacrifice (on 'Id al-Adha), he should not get his hair cut and nails trimmed after he has entered the first days of Dhu'l Hijja...