صحيح ابن خزيمه
Sahih Ibn Khuzaymah
جماع أبواب صلاة الخوفChapters on Fear Prayer
(630) بَابٌ فِي صَلَاةِ الْخَوْفِ أَيْضًا وَانْتِظَارِ الْإِمَامِ الطَّائِفَةَ الْأُولَى بَعْدَ سَجْدَةٍ مِنَ الرَّكْعَةِ الْأُولَى لِيَسْجُدَ السَّجْدَةَ الثَّانِيَةَ630| The fear prayer and the imam waiting for the first group after one prostration of the first unit to complete the second prostration
Hadith Q1363
وَانْتِظَارِ الثَّانِيَةِ حَتَّى تَرْكَعَ رَكْعَةً لِتَلْحَقَ بِالْإِمَامِ فَتَسْجُدَ مَعَهُ السَّجْدَةَ الثَّانِيَةَ، ثُمَّ يَنْتَظِرُهُمُ الْإِمَامُ قَائِمًا لِتَسْجُدَ السَّجْدَةَ الثَّانِيَةَ، وَجَمْعِ الْإِمَامِ الطَّائِفَتَيْنِ جَمِيعًا بِالرَّكْعَةِ الثَّانِيَةِ فَيَكُونُ فَرَاغُ الْإِمَامِ وَالْمَأْمُومِينَ جَمِيعًا مِنَ الصَّلَاةِ مَعًا
And he will wait for the other group so that they may join the Imam after praying one rak'ah, then they will perform the second prostration with him. Then the Imam will stand and wait for them so that they may complete their second prostration, and the Imam will gather both groups for the second rak'ah. In this way, the Imam and the followers will finish the prayer together.
