﴿ ثُمَّ يَأْتِى مِنۢ بَعْدِ ذَٰلِكَ سَبْعٌۭ شِدَادٌۭ يَأْكُلْنَ مَا قَدَّمْتُمْ لَهُنَّ إِلَّا قَلِيلًۭا مِّمَّا تُحْصِنُونَ ﴾

“for, after that [period of seven good years] there will come seven hard [years] which will devour all that you shall have laid up for them, excepting only a little of that which you shall have kept in store.”

Please check ayah 12:49 for complete tafsir.