Ikrimah (may Allah have mercy on him) used to recite this verse: ﴿وَعَلَى الَّذِينَ يُطِيقُونَهُ﴾ «وَعَلَى الَّذِينَ يُطَوَّقُونَهُ» and said: If «يُطِيقُونَهُ» had been, they would have fasted.