I am a 36 year old woman with 6 kids and I am now with my 7th child and would like to know if it is permissible in Islam to tie my tubes when this baby is born? I don’t want to cut and burn them, I want to place a band around the tubes to avoid the egg from dropping all the way down. I know I cannot stop the will of Allah, I just want to try to loose weight. I weigh more that 250 lbs. Every time I try to loose weight, I end up pregnant.


Praise be to Allah.
 

It is not permissible to
prevent pregnancy except in cases of necessity where competent doctors have
stated that giving birth will cause the mother to become exhausted or ill,
or will make her sickness worse, or there is the fear that pregnancy or
childbirth will most likely cause the mother to die. In that case it is
essential to have the husband’s agreement and consent to prevent or end
pregnancy. When this reason is no longer a factor, then the woman should go
back to not using contraception. 

Fatawa al-Mar’ah al-Muslimah,
2/977 

Because losing weight does not reach the degree of necessity
mentioned above, it does not come under the same ruling, especially since
this operation to tie the tubes requires the female doctor to uncover and
touch the ‘awrah. It is even worse if the doctor is male, so this is another
reason not to allow it. 

But you have to follow the guidance of the Prophet
(peace and blessings of Allah be upon him) with regard to food. The
Messenger of Allah (peace and blessings of Allah be upon him) said:
“The son of Adam does not fill any vessel worse than his stomach. It is
sufficient for the son of Adam to eat a few morsels to keep him alive. But
if he must (fill it), then one-third for his food, one-third for his drink
and one-third for air.” (Narrated by al-Tirmidhi, al-Zuhd, 2303;
classed as saheeh in Saheeh Sunan al-Tirmidhi, no. 1939) 

You should also follow the permissible means (of preventing
pregnancy), such as withdrawal during intercourse (‘azl). The correct
scholarly view is that there is nothing wrong with ‘azl even if there is no
reason for it, because of the hadeeth of Jabir: “We used to practise ‘azl
at the time when the Quran was being revealed.” (Narrated by al-Bukhari,
al-Nikah, 4808).

And Allah knows best.

 Fatawa al-Mar’ah al-Muslimah, 2/658

 Perhaps what Allah has decreed for you of children will be better for you than you think, and they will be a blessing that is stored up for you, especially in old age.