Seeing a spider web in your house or a spider in a dream has a special meaning in Islam, whether it is small or big, black or brown.
1- As per Islam, the meaning of seeing a spider weaving a web in your house in a dream is becoming weak internally in the real-life. He should focus on his health before something bad happens to him.
2- Seeing a hairy black spider in a dream might represent a poisonous enemy, a brutal sting, or a despising look in Islam. It might also represent a troublemaking and evil woman who is likely to bring harm to one’s business and interests.
3- Seeing spider web in a marketplace is bad for business as it will bring some major losses. Generally speaking, seeing a spider web in a dream is not a good sign.
4- If one sees a dark hall with spider webs in a dream, it means he will be facing difficulties in his business or home. He could suffer a major loss or lose his job. The comfort of his home might also be disturbed.