How can his deceased relatives benefit from hisreading Qur’aan?

When I read the Holy Qur'aan I would like my relatives who passed away
to benefit from myreading .Besides,I want to make supplications after
reading the Qur'aan for myself and my family.What actions are exactly
to be done,for as far as I know raising hands and wiping the face are
bid'ah?
Praise be to Allaah.
The correct view is that the dead can benefit from the physical acts
of worship undertaken by their living relatives with the intention of
giving the reward to them (physical acts of worship include fasting
and reading Qur'aan). The same applies to financial acts of
worship,such as giving charity onbehalf of the deceased or freeing a
slave on his behalf, even though some of these actions are not
prescribed as such.
This is indicated by the hadeeth of Sa'd ibn 'Ubaadah (may Allaah
bepleased with him), who gave his garden in charity on behalf of his
mother who had died, and the Prophet (peace and blessings of Allaah be
upon him) approved of that (narrated by al-Bukhaari), and other
ahaadeeth.
But giving charity on behalf of the deceased isbetter than reading
Qur'aan for them, just as making du'aa' for them and seeking
forgiveness for them is better than other deeds.
If you give in charity on behalf of your deceased relative, or you
make du'aa' for him – or other actions – the deceased will benefit
from that, and you will also have the reward for that, for the Bounty
of Allaah is immense.
With regard to raising one's hands when making du'aa': this is
notbid'ah; in fact it is Sunnah and is part of the teachings of
guidance and one of themeans of having one's du'aa's answered. It was
narrated in a saheeh report that the Prophet (peace and blessings of
Allaah be upon him) said: "Allaah is modest and most generous; if a
man raises his hands to Him, He cannot send them back empty and
unanswered," (Narrated by Ahmad and Abu Dawood from the hadeeth of
Salmaan).
But it is makrooh to raise one's hands at certain times, such as when
the khateeb makes du'aa' at Jumu'ah prayers, unless the khateeb is
praying for rain at Jumu'ah prayers, in which case it is prescribed to
raise one's hands. This was reportedin a saheeh hadeeth from the
Messenger of Allaah (peace and blessings of Allaah be upon him).
Similarly, it is not permitted to raise one's hands in congregation
or individually after praying a fard prayer, asthere is no evidence
for doing so. Wiping the face, chest or body after making du'aa' is
bid'ah and is not permitted. And Allaah knows best.
Islam Q&A
Sheikh Muhammed Salih Al-Munajjid