An-Nisa' - 4:85

مَّن يَشْفَعْ شَفَاعَةً حَسَنَةً يَكُن لَّهُ نَصِيبٌ مِّنْهَا وَمَن يَشْفَعْ شَفَاعَةً سَيِّئَةً يَكُن لَّهُ كِفْلٌ مِّنْهَا وَكَانَ اللّهُ عَلَى كُلِّ شَيْءٍ مُّقِيتًا
[4:85]
Whoever joins himself (to another) in a good cause shall have a share of it, and whoever joins himself (to another) in an evil cause shall have the responsibility of it, and Allah controls all things.
Whoever recommends and helps a good cause becomes a partner therein: And whoever recommends and helps an evil cause, shares in its burden: And Allah hath power over all things.
Whoso interveneth in a good cause will have the reward thereof, and whoso interveneth in an evil cause will bear the consequence thereof. Allah overseeth all things.