وَكَذٰلِكَ بَعَثْنٰهُمْ لِيَتَسَاۤءَلُوْا بَيْنَهُمْۗ قَالَ قَاۤىِٕلٌ مِّنْهُمْ كَمْ لَبِثْتُمْۗ قَالُوْا لَبِثْنَا يَوْمًا اَوْ بَعْضَ يَوْمٍۗ قَالُوْا رَبُّكُمْ اَعْلَمُ بِمَا لَبِثْتُمْۗ فَابْعَثُوْٓا اَحَدَكُمْ بِوَرِقِكُمْ هٰذِهٖٓ اِلَى الْمَدِيْنَةِ فَلْيَنْظُرْ اَيُّهَآ اَزْكٰى طَعَامًا فَلْيَأْتِكُمْ بِرِزْقٍ مِّنْهُ وَلْيَتَلَطَّفْ وَلَا يُشْعِرَنَّ بِكُمْ اَحَدًا ( الكهف: ١٩ )
Wa kazaalika ba'asnaahum liyatasaaa'aloo bainahum; qaala qaaa'ilum minhum kam labistum qaaloo labisnaa yawman aw ba'da yawm; qaaloo Rabbukum a'almu bimaa labistum fab'asooo ahadakum biwariqikum haazihee ilal madeenati falyanzur ayyuhaaa azkaa ta'aaman falyaatikum birizqim minhu walyatalattaf wa laa yush'iranna bikum ahadaa (al-Kahf 18:19)
Sahih International:
And similarly, We awakened them that they might question one another. Said a speaker from among them, "How long have you remained [here]?" They said, "We have remained a day or part of a day." They said, "Your Lord is most knowing of how long you remained. So send one of you with this silver coin of yours to the city and let him look to which is the best of food and bring you provision from it and let him be cautious. And let no one be aware of you. (Al-Kahf [18] : 19)
1 Mufti Taqi Usmani
In this way We raised them up until they asked each other. One of them said, “How long did you tarry?” They said, “A day, or part of a day.” They said, “Your Lord knows best how long you tarried.” So, send one of you with this silver (coin) of yours to the city and let him look around which of the eatables are the purest and let him bring you some food from there. And he must act in polite manner, and must not let anyone know about you.