Hisham bin 'Ammar bin Nasayr هشام بن عمار بن نصير · The Book of the Prayer

The Messenger of Allah said: "When it is very hot, then wait for it to cool down before you pray, for intense heat is from the flaring up of the Hell-fire."

"The Prophet prayed the 'Asr when the sun was shining into my room and there were no shadows yet."

"I heard Rafi' bin Khadij say: 'We used to perform the Maghrib at the time of the Messenger of Allah, and one of us would be able to see the places where his arrows would land when shot from his bow.'" (Sahih)Another chain with similar wording.