A tree will be planted for you in Paradise.

Sayyiduna Abu Hurairah (RadhiAllaho anho) narrates
that Rasulullah (Sallallahu Alaihi Wasallam)
passed by me and I was planting a sapling.

He (sallal laahu alaihi wasallam) asked
O Abu Hurairah !
What are you planting ?
I replied:
Saplings for myself.
He (sallal laahu alaihi wasallam) said:
Shall I not tell you of better saplings than these?
I said: yes O Rasulallah!
(sallal laahu alaihi wasallam)
He (sallal laahu alaihi wasallam) said:

Say,

Subhanallah
(Glory be to Allah Who is above all faults)

Alhamdulillah
(Praise be to Allah)

La ilaha illallah
(There is none worthy of worship except Allah)

Allahuakbar
( Allah is the Greatest )

for each one of these words
a tree will be planted for you in Paradise.

{ Ibne- Majah }

La ilaha illallah

Sayyiduna Anas (RadhiAllaho anho) narrates
that Rasulullah (Sallallahu Alaihi Wasallam) said:

Say

Subhanallah
(Glory be to Allah Who is above all faults)

Alhamdulillah
(All Praise be to Allah)

La ilaha illallah
(There is none worthy of worship except Allah)

and

Allahu Akbar
( Allah is the Greatest ),

this causes the sins to fall like leaves fall from trees.

{ Musnad Ahmad }