Mishkat al-Masabih 860
Abu Huraira reported God’s Messenger as saying:
When one of you recites, "By the fig and the olive”1 and comes to "Is not God the best of judges?”2 he should say, "Certainly, and I am one of those who testify to that.” When one recites, "I swear by the day of resurrection”3 and comes to "Is not that One able to raise the dead to life?’4 he should say, "Certainly.” And when one recites, "By those that are sent”5 and comes to "Then in what message after that will they believe?”6 he should say, "We believe in God.” 

1. Al-Qur’an; 95	
2. Verse 8
3. Al-Qur’an; 75
4. Verse 40.
5. Al-Qur’an; 77	
6. Verse 50.

Abu Dawud transmitted it, and Tirmidhi transmitted up to "and I am one of those who testify to that.”
وَعَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: 
" من قَرَأَ مِنْكُم ب (التِّين وَالزَّيْتُون)
فَانْتهى إِلَى (أَلَيْسَ الله بِأَحْكَم الْحَاكِمين)
فَلْيَقُلْ: بَلَى وَأَنَا عَلَى ذَلِكَ مِنَ الشَّاهِدِينَ. وَمن قَرَأَ: (لَا أقسم بِيَوْم الْقِيَامَة)
فَانْتَهَى إِلَى (أَلَيْسَ ذَلِكَ بِقَادِرٍ عَلَى أَن يحيي الْمَوْتَى)
فَلْيَقُلْ بَلَى. وَمَنْ قَرَأَ (وَالْمُرْسَلَاتِ)
فَبَلَغَ: (فَبِأَيِّ حَدِيث بعده يُؤمنُونَ)
فَلْيَقُلْ: آمَنَّا بِاللَّهِ ". رَوَاهُ أَبُو دَاوُدَ وَالتِّرْمِذِيُّ إِلَى قَوْلِهِ: (وَأَنَا عَلَى ذَلِكَ مِنَ الشَّاهِدِينَ)