(Al-Qalam) 68 : 41
أَمْ لَهُمْ شُرَكَاءُ فَلْيَأْتُوا بِشُرَكَائِهِمْ إِنْ كَانُوا صَادِقِينَ
Or have they any patrons? Then they may bring their patrons if they are so truthful.
See explanation 10: 18; 16: 86; and 46: 4-5.