"Indeed a man may utter a statement that he does not see any harm in, but for which he will fall seventy autumns in the Fire." (Using translation from Tirmidhī 2314)
"إِنَّ الرَّجُلَ لَيَتَكَلَّمُ بالْكَلِمَة لا يَرَى بِهَا بَأسًا، يَهْوى بِها سِبْعينَ خَرِيفًا فِي النَّارِ".