Sahih Muslim Book - 5, Hadith - 1412

وَحَدَّثَنَا يَحْيَى بْنُ أَيُّوبَ وَمُحَمَّدُ بْنُ الصَّبَّاحِ وَقُتَيْبَةُ وَابْنُ حُجْرٍ قَالُوا حَدَّثَنَا إِسْمَاعِيلُ بْنُ جَعْفَرٍ عَنِ الْعَلاَءِ بْنِ عَبْدِ الرَّحْمَنِ أَنَّهُ دَخَلَ عَلَى أَنَسِ بْنِ مَالِكٍ فِى دَارِهِ بِالْبَصْرَةِ حِينَ انْصَرَفَ مِنَ الظُّهْرِ وَدَارُهُ بِجَنْبِ الْمَسْجِدِ فَلَمَّا دَخَلْنَا عَلَيْهِ قَالَ أَصَلَّيْتُمُ الْعَصْرَ فَقُلْنَا لَهُ إِنَّمَا انْصَرَفْنَا السَّاعَةَ مِنَ الظُّهْرِ. قَالَ فَصَلُّوا الْعَصْرَ. فَقُمْنَا فَصَلَّيْنَا فَلَمَّا انْصَرَفْنَا قَالَ سَمِعْتُ رَسُولَ اللَّهِ -صلى الله عليه وسلم- يَقُولُ « تِلْكَ صَلاَةُ الْمُنَافِقِ يَجْلِسُ يَرْقُبُ الشَّمْسَ حَتَّى إِذَا كَانَتْ بَيْنَ قَرْنَىِ الشَّيْطَانِ قَامَ فَنَقَرَهَا أَرْبَعًا لاَ يَذْكُرُ اللَّهَ فِيهَا إِلاَّ قَلِيلاً ».

It was narrated from Al-'Ala bin 'Abdur-Rahman that he entered upon Anas bin Malik in his house in Al-Basrah, when he had finished Zuhr, and his house was beside the Masjid. When we entered upon him he said: 'Have you prayed 'Asr?' We said: 'We have just finished Zuhr.' He said: 'Pray 'Asr.' So we stood up and prayed, and when we had finished he said: 'I heard the Messenger of Allah (s.a.w) say: That is the prayer of the hypocrite. He sits watching the sun, then when it is between the horns of the Shaitan, he stands up and pecks out four Rak'ah, in which he remembers Allah only a little."'