"I watched the Messenger of Allah ﷺ- twenty times- reciting in the two rak'ahs after maghrib 'Say: O you disbelievers' and 'Say: He is Allah, (the) One.'"  

رَمَقْتُ رَسُولَ اللَّهِ ﷺ عِشْرِينَ مَرَّةً يَقْرَأُ فِي الرَّكْعَتَيْنِ بَعْدَ الْمَغْرِبِ وَفِي الرَّكْعَتَيْنِ قَبْلَ الْفَجْرِ { قُلْ يَا أَيُّهَا الْكَافِرُونَ } وَ { قُلْ هُوَ اللَّهُ أَحَدٌ }