One can see a navel or belly button in a dream which could have different meanings as per Islam depending upon the context. Generally, the belly button in a dream is a wife.
1- According to Ibn Sirin رحمة الله عليه the greatest dream interpreter of Islam, Seeing the navel falling in a dream means that the dreamer would either divorce his wife or she would die.
2- Seeing a cut or injury on your belly button means that your family would die and you would get destroyed.
3- Seeing your navel shrinking in its size means that your family would prosper.
4- Seeing a hole in your belly button means that the dreamer would face obstacles in his current work.
5- According to Jabar Maghrabi رحمة الله عليه seeing hair on your navel means that the dreamer would love the sunnah of Prophet Muhammad ﷺ.
6- If the belly button has been removed in a dream as if it was never there, it means that the dreamer will get separated from his family.
7- According to Ismail Isha’at رحمة الله عليه cutting the belly button of someone else in a dream means that the wealth of the dreamer would get wasted.