The Messenger of Allah used to pray 'Asr when the sun was still hot and high, and if a person were to go to the suburbs (of Al-Madinah) he would be able to reach it while the sun was still hot and high.
Sunan Ibn Majah Book 2, Hadith 16
← Previous Hadith "The Messenger of Allah said: 'Wait for it to cool down before you pray the Zuhr.'"

Sunan Ibn Majah Book 2, Hadith 15 Next Hadith → "The Prophet prayed the 'Asr when the sun was shining into my room and there were no shadows yet."

Sunan Ibn Majah Book 2, Hadith 17