Sahih Adab al-Mufrad

It is narrated from Sayyiduna Abdullah bin Zubair (may Allah be pleased with him) that when he used to hear the sound of thunder, he would stop speaking and say: «سبحان الذى يسبح الرعد بحمده والملائكة من خيفته» Then he would say: This is a severe warning for the inhabitants of the earth.