I heard the Messenger of Allah ﷺ say: Lands shall be thrown open to you and Allah will suffice you (against your enemies), but none of you should give up playing with his arrows. (Using translation from Muslim 1918a)
أَنَّهُ قَالَ سَمِعْتُ رَسُولَ اللهِ ﷺ قَالَ سَتُفْتَحُ عَلَيْكُمْ أَرَضُونَ وَيَكْفِيكُمُ اللهُ فَلَا يُعْجِزُ أَحَدُكُمْ أَنْ يَلْهُوَ بِأَسْهُمِهِ قَالَ سُرَيْجٌ ثُمَامَةَ بْنِ شُفَيٍّ