ENOfficial
Sulaiman b. ‘Amir reported God’s messenger as saying, “Sadaqa given to a poor man is just sadaqa, but when given to a relative it serves a double purpose, being both sadaqa and a connecting link.” Ahmad, Tirmidhi, Nasa’i, Ibn Majah and Darimi transmitted it.
Source: sunnah.com
Other translations
Arabic
وَعَنْ سَلْمَانَ بْنِ عَامِرٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: " الصَّدَقَةُ عَلَى الْمِسْكِينِ صَدَقَةٌ وَهِيَ عَلَى ذِي الرَّحِمِ ثِنْتَانِ: صَدَقَةٌ وَصِلَةٌ ". رَوَاهُ أَحْمَدُ وَالتِّرْمِذِيُّ وَالنَّسَائِيُّ وَابْنُ مَاجَهْ وَالدَّارِمِيُّ
sunnah.com