Assalam Aleikum
Is it permissible to combine all the five prayers, at the start of a journey, if you
have an attention to travel a long distance requiring very long hours of traveling. If
not, then how many prayers can be combined at each time.
May Allah accept your effort in helping your muslim brothers to better
understand their religion.

Praise be to Allaah.

It is not permissible to combine all five prayers at one time, even if it
is because of travelling. Indeed, it is not permissible to combine three prayers, so it is
not correct to combine Maghrib, ‘Isha’ and Fajr, for example. What is permitted
is to combine Zuhr and ‘Asr, and Maghrib and ‘Isha’, but Fajr cannot be
combined with any other prayer. The reason for this is that each one of the five prayers
has its appointed time which is clearly defined, and which should be adhered to as it says
in the Qur’aan:

“… Verily, the prayer is enjoined on the
believers at fixed hours.”
[al-Nisa’ 4:103]

This is also indicated by the hadeeth in which
Jibreel (peace be upon him) defined the times of each prayer and explained them to the
Prophet
(peace and blessings of Allaah be upon him).

It was not reported that the Prophet
(peace and blessings of Allaah be
upon him) combined all five prayers, only that he combined Zuhr and ‘Asr, and Maghrib
and ‘Isha’. Acts of worship are based on reports, and combining prayers is an
issue that has to do with acts of worship, so we should adhere to what it says in the
texts and not try to take the matter any further. Ibn Daqeeq al-‘Eed reported
scholarly consensus on this issue, as did Ibn Hubayrah. Ibn Hajar al-Haythami said: “
‘Asr should not be combined with Maghrib, nor ‘Isha’ with Subh (Fajr),
‘Asr can only be combined with Zuhr, in accordance with what was reported.”

Al-Raafi’i (may Allaah have mercy on him) said: “It is not
permitted to combine Salaat al-Subh with any other prayer, or to combine ‘Asr and
Maghrib, because no such thing was reported from the Messenger of Allaah
(peace and
blessings of Allaah be upon him).”

(Al-Haafiz ibn Hajar agreed with him in Talkhees al-Habeer,
4/427).

Al-Nawawi said: “It is not permitted to combine Subh with any other
prayer, or to combine ‘Asr with Maghrib.”

And Allaah knows best.