Narrated [Ibn 'Abbas (RA)]:

He [the Prophet (ﷺ)] prayed during an earthquake six bowings and four prostrations, and said, "This is the way the Prayer of the Signs (of Allah) is offered. [Reported by al-Baihaqi].

وَعَنْهُ: { أَنَّهُ صَلَّى فِي زَلْزَلَةٍ سِتَّ رَكَعَاتٍ, وَأَرْبَعَ سَجَدَاتٍ, وَقَالَ: هَكَذَا صَلَاةُ اَلْآيَاتِ } رَوَاهُ اَلْبَيْهَقِيُّ [1]‏ .‏