Charity given during one’s lifetime is better

The virtue of giving in charity whilst one is in good
health: 

It was narrated from Abu
Hurayrah (may Allaah be pleased with him) that a man came to the Prophet
(peace and blessings of Allaah be upon him) and said: “O Messenger of
Allaah, which charity brings a greater reward?” He said, “If you give in
charity when you are healthy and miserly, fearing poverty and hoping for
richness. Do not delay until you are at the point of death and you say,
‘Give this to So and so, give this to So and so,’ …” (al-Bukhaari, 1330;
Muslim, 1713). 

Al-Nawawi (may Allaah have mercy on him) said: “Al-Khattaabi
said: what this hadeeth means is that miserliness is more likely when one is
in good health, so if a person is miserly but he still gives in charity, his
intention is more sincere and his reward will be greater, unlike the one who
is facing death and no longer has any hope of living. Then he starts to
realize that someone else will take his wealth, so his charity in this case
is lacking, when compared with charity given when one is in good health.
Stinginess is based on the hope of remaining alive and fear of poverty… so a
person does not have as much reward for his will, compared to the reward for
charity given by one who is healthy and miserly.” 

Al-Haafiz ibn Hajar (may Allaah have mercy on him) said: “The
hadeeth indicates that paying off debts and giving in charity during one’s
lifetime when one is in good health is better than doing so after death or
when one is sick. The Prophet (peace and blessings of Allaah be upon
him) referred to that when he said: ‘When you are in good health and being
cautious, hoping to be rich…’ because when a person is in good health it is
usually harder for him to give money, because the Shaytaan makes him fear
for it and makes attractive to him the idea that he may live a long life and
need that money, as Allaah says (interpretation of the meaning): 

‘Shaytaan
(Satan) threatens you with poverty’[al-Baqarah
2:268] 

The Shaytaan may also
make attractive the idea of being unfair in one’s will or revoking it
altogether. 

Some of the Salaf said of some wealthy people: “They disobey
Allaah with regard to their wealth twice, by being stingy with it when it is
in their hands – i.e., during their lifetime, and by being extravagant with
it when it is no longer in their hands – i.e., after death.” Al-Tirmidhi
narrated with a hasan isnaad, which was classed as saheeh by Ibn Hibbaan,
that Abu’l-Dardaa’ said in a marfoo’ report: “The likeness of the one who
frees slaves and gives in charity when he is dying is that of a person who
gives his food away after he has eaten his fill.” This is similar to the
hadeeth quoted above. 

Abu Dawood narrated a marfoo’ hadeeth from Abu Sa’eed
al-Khudri, which was classed as saheeh by Ibn Hibbaan, which says: “If a man
were to give one dirham in charity when he is alive and in good health, that
is better for him than giving one hundred when he is dying.”.