"Whoever intercedes for a good cause will have a portion of it" (85), meaning: a share. "And whoever intercedes"
﴿مَنْ يَشْفَعْ شَفَاعَةً حَسَنَةً يَكُنْ لَهُ نصيب مِنْهَا﴾ أَي: حَظّ (وَمَنْ يَشْفَعْ