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.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
tirmidhi:1098 – Abū Salamah Yaḥyá b. Khalaf > Bishr b. al-Mufaḍḍal > Ismāʿīl b. Umayyah > Nāfiʿ > Ibn ʿUmar

The Messenger of Allah said: "Accept the invitation when you are offered."  

الترمذي:١٠٩٨ – حَدَّثَنَا أَبُو سَلَمَةَ يَحْيَى بْنُ خَلَفٍ حَدَّثَنَا بِشْرُ بْنُ الْمُفَضَّلِ عَنْ إِسْمَاعِيلَ بْنِ أُمَيَّةَ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ قَالَ

قَالَ رَسُولُ اللَّهِ ﷺ ائْتُوا الدَّعْوَةَ إِذَا دُعِيتُمْ قَالَ وَفِي الْبَابِ عَنْ عَلِيٍّ وَأَبِي هُرَيْرَةَ وَالْبَرَاءِ وَأَنَسٍ وَأَبِي أَيُّوبَ  

قَالَ أَبُو عِيسَى حَدِيثُ ابْنِ عُمَرَ حَدِيثٌ حَسَنٌ صَحِيحٌ