Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
quran:5:21

O my people, enter the Holy Land which Allah has assigned to you and do not turn back ˹from fighting in Allah 's cause˺ and ˹thus˺ become losers."  

O my people, enter the Holy, the purified, Land which God has ordained for you, ˹which˺ He commanded you to enter, and this is Syria (al-shām), and do not turn back in flight, ˹do not˺ retreat in fear of the enemy, or you will end up as losers’, in your efforts.
القرآن:٥:٢١

يَا قَوْمِ ادْخُلُوا الْأَرْضَ الْمُقَدَّسَةَ الَّتِي كَتَبَ اللَّهُ لَكُمْ وَلَا تَرْتَدُّوا عَلَىٰ أَدْبَارِكُمْ فَتَنْقَلِبُوا خَاسِرِينَ  

{يا قوم ادخلوا الأرض المقدَّسة} المطهرة {التي كتب الله لكم} أمركم بدخولها وهي الشام {ولا ترتدُّوا على أدباركم} تنهزموا خوف العدو {فتنقلبوا خاسرين} في سعيكم.