Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) said: "When a sin is committed on earth, the one present who disliked it is like one who was not there, but the one who was absent and yet approves of that sin is like one who was present."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصداق / 14551