Sunan Ibn Majah, Book 37, Hadith 4475 (In-Book) ⓘ
Usamah bin Zaid said: “The Messenger of Allah said one day to his Companions: ‘Who will strive hard with sincerity for Paradise? For there is nothing like Paradise. By the Lord of the Ka’bah, it is sparkling light, sweet basil waving in the breeze, a lofty palace, a flowing river, abundant ripe fruit, a beautiful wife and many fine garments, in a palace of eternal abode, in ease and luxury, in beautiful, strongly-built, lofty houses.’ They said: ‘We will strive heard for it, O Messenger of Allah.’ He said: ‘Say: In sha’ Allah (if Allah wills).’ Then he mentioned Jihad and encouraged them to engage in it.”
حَدَّثَنَا الْعَبَّاسُ بْنُ عُثْمَانَ الدِّمَشْقِيُّ، حَدَّثَنَا الْوَلِيدُ بْنُ مُسْلِمٍ، حَدَّثَنَا مُحَمَّدُ بْنُ مُهَاجِرٍ الأَنْصَارِيُّ، حَدَّثَنِي الضَّحَّاكُ الْمَعَافِرِيُّ، عَنْ سُلَيْمَانَ بْنِ مُوسَى، عَنْ كُرَيْبٍ، - مَوْلَى ابْنِ عَبَّاسٍ - قَالَ حَدَّثَنِي أُسَامَةُ بْنُ زَيْدٍ، قَالَ قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ ذَاتَ يَوْمٍ لأَصْحَابِهِ " أَلاَ مُشَمِّرٌ لِلْجَنَّةِ فَإِنَّ الْجَنَّةَ لاَ خَطَرَ لَهَا هِيَ وَرَبِّ الْكَعْبَةِ نُورٌ يَتَلأْلأُ وَرَيْحَانَةٌ تَهْتَزُّ وَقَصْرٌ مَشِيدٌ وَنَهَرٌ مُطَّرِدٌ وَفَاكِهَةٌ كَثِيرَةٌ نَضِيجَةٌ وَزَوْجَةٌ حَسْنَاءُ جَمِيلَةٌ وَحُلَلٌ كَثِيرَةٌ فِي مَقَامٍ أَبَدًا فِي حَبْرَةٍ وَنَضْرَةٍ فِي دَارٍ عَالِيَةٍ سَلِيمَةٍ بَهِيَّةٍ " . قَالُوا نَحْنُ الْمُشَمِّرُونَ لَهَا يَا رَسُولَ اللَّهِ . قَالَ " قُولُوا إِنْ شَاءَ اللَّهُ " . ثُمَّ ذَكَرَ الْجِهَادَ وَحَضَّ عَلَيْهِ .
also referenced under: Hadith 4332 (Reference) & Volume 5, Book 37, Hadith 4332 (DarusSalam)