Hadith 399
Narrated Jabir ibn Abdullah: I would offer my noon prayer with the Messenger of Allah ﷺ and took a handful of gravels so that they might become cold in my hand and I placed them (before me) so that I may put my forehead on them at the time when I would prostrate. I did this due to the intensity of heat.
Hadith 3724
Jabir bin Abdullah said: The Prophet ﷺ went to visit a man of the Ansar accompanied by one of his Companions who was watering his garden. The Messenger of Allah ﷺ said: If you have any water which has remained over night in a skin (we should like it), or shall sip (from a streamlet).