AT TAUBAH — Ayat 42
لَوْ كَانَ عَرَضًا قَرِيبًا وَسَفَرًا قَاصِدًا لاَّتَّبَعُوكَ وَلَـكِن بَعُدَتْ عَلَيْهِمُ الشُّقَّةُ وَسَيَحْلِفُونَ بِاللّهِ لَوِ اسْتَطَعْنَا لَخَرَجْنَا مَعَكُمْ يُهْلِكُونَ أَنفُسَهُمْ وَاللّهُ يَعْلَمُ إِنَّهُمْ لَكَاذِبُونَ
Had it been an easy gain and a moderate trip, the hypocrites would have followed you, but distant to them was the journey. And they will swear by Allah , "If we were able, we would have gone forth with you," destroying themselves [through false oaths], and Allah knows that indeed they are liars.
Tafsir Ibnu Katsir
لَوْ كَانَ عَرَضًا قَرِيبًا وَسَفَرًا قَاصِدًا لاَّتَّبَعُوكَ وَلَـكِن بَعُدَتْ عَلَيْهِمُ الشُّقَّةُ وَسَيَحْلِفُونَ بِاللَّهِ لَوِ اسْتَطَعْنَا لَخَرَجْنَا مَعَكُمْ يُهْلِكُونَ أَنفُسَهُمْ وَاللَّهُ يَعْلَمُ إِنَّهُمْ لَكَـذِبُونَ
42. Had it been a near gain and an easy journey, they would have followed you, but the distance was long for them; and they would swear by Allah: â€If we only could, we would certainly have come forth with you.'' They destroy themselves, and Allah knows that they are liars. Allah admonishes those who lagged behind and did not join the Prophet for the battle of Tabuk, those who asked the Prophet for permission to remain behind, falsely pretending to have legitimate reasons to do so,