When you want something big
Sulaymān ﷺ asked for a kingdom, and put forgiveness first.
قَالَ رَبِّ ٱغْفِرْ لِى وَهَبْ لِى مُلْكًا لَّا يَنۢبَغِى لِأَحَدٍ مِّنۢ بَعْدِىٓ ۖ إِنَّكَ أَنتَ ٱلْوَهَّابُ
Rabbi-ghfir lī wa hab lī mulkan lā yanbaghī li-aḥadin min baʿdī, innaka anta-l-Wahhāb.
He said, "My Lord, forgive me and grant me a kingdom such as will not belong to anyone after me. Indeed, You are the Bestower."
The Qur'an records the biggest worldly request any prophet made, and it opens with asking to be forgiven for making it.
Source
The Qur'an · 38:35
Qur'an
- Qur'anic text in the Uthmani script via Quran.com; translation: Saheeh International